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Today’s Deals2026 Merida
REACTO 4000
A carbon frame aero bike with upper mid-range components and shimano 105 hydraulic disc brakes.
Manufacturer Price
£2,400| Weight | 9.0 kg |
|---|---|
| Frame | Carbon |
| Fork | Carbon |
| Wheels | 700c Aluminum |
| Drivetrain | 2 × 12 |
| Groupset | 105 |
| Brakes | Shimano 105 Hydraulic Disc |
Mar 2026 · Cory Benson
The new Merida Reacto 5 is the fastest aero road bike yet in benchmark GST wind tunnel testing, but it's more versatile, too!
Mar 2026 · Ewan Wilson
Taiwanese brand Merida has launched the fifth generation of its Reacto aero road bike. While the brand has lost its
Mar 2026 · Alex Hunt
With a 14-watt gain and a geometry frozen in time, Merida’s fifth-generation Reacto chases balance alongside aero improvement.
Aug 2025
Five years on, the Reacto is still a fast and planted aero road bike that is able to compete with the best in the category
Good specification
Sharp handling
Stiff bottom bracket
Stealthy appearance
Balanced geometry for an aero bike
No power meter
30mm tyre clearance is dated
New model imminent
| Frame | REACTO CF3 IV, material: carbon, 700x30C max. wheelsize, 100x12/ 142x12mm axle standard, BB86,5 bottom bracket standard BB Standard: BB86/BB92, 86.5mm, Press Fit Tire Clearance: 30c |
|---|---|
| Fork | MERIDA REACTO CF3 IV DISC, material: carbon, 700x30C max. wheelsize |
| Bottom Bracket | Shimano SM-BB71-41B, Pressfit 86.5 |
| Headset | MERIDA TEAM SL, VP-MRBHB (OP203 neck) |
| Stem | MERIDA EXPERT SL 2P II, material: aluminium, -9°° stem angle, 90 mm (XXS/XS), 100 mm (S), 110 mm (M/L), 120 mm (XL) |
| Handlebar | MERIDA EXPERT CW, material: aluminium, 380mm (3S-XXS-XS-S), 400mm (M-L) 420mm (XL) |
| Saddle | MERIDA EXPERT SL, 6% recycled and 23% nature material, V-mount, incl. MERIDA minitool |
| Seatpost | MERIDA TEAM CW, Aero shape, 15mm setback, Carbon Type: Rigid |
| Rear Derailleur | Shimano 105, GS |
|---|---|
| Front Derailleur | Shimano 105 |
| Crank | Shimano 105 R7100, 52-36 teeth, 160 mm-3S, 165 mm-XXS/XS, 170 mm-S/M, 172.5 mm-L/XL |
| Shifters | Shimano 105 disc |
| Cassette | Shimano 105 R7101, 11-34 teeth, 12 speed |
| Chain | Shimano M6100-12 |
| Brakes | Shimano 105, Disc Type: Shimano 105 Hydraulic Disc |
| Brake Levers | Shimano 105 |
| Rims | MERIDA EXPERT CW, 19mm inner width, 30mm height, material: aluminium, Tubeless ready (tubeless tape and valves not included) |
|---|---|
| Spokes | Double Butted Black stainless |
| Front Hub | Shimano TC500 / Shimano TC500-HL, 100x12mm width front hub, 28 spoke holes, Centerlock, 12x142mm width rear hub, 28 spoke holes, Centerlock |
| Rear Hub | Shimano TC500 / Shimano TC500-HL, 100x12mm width front hub, 28 spoke holes, Centerlock, 12x142mm width rear hub, 28 spoke holes, Centerlock |
| Tires | Front: Continental Grand Prix, 700x28C, fold *, Rear: Continental Grand Prix, 700x28C, fold * |
| Disc Rotors | Shimano RT54, 160mm |
First added 23 August
Last updated 30 May